US9320050B2 - Systems and methods to enhance radio link performance in a multi-carrier environment - Google Patents

Systems and methods to enhance radio link performance in a multi-carrier environment Download PDF

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US9320050B2
US9320050B2 US13/930,610 US201313930610A US9320050B2 US 9320050 B2 US9320050 B2 US 9320050B2 US 201313930610 A US201313930610 A US 201313930610A US 9320050 B2 US9320050 B2 US 9320050B2
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packet
component carriers
layer
priority
level
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US20150003336A1 (en
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Ajoy K. Singh
Tarik Tabet
Sarma V. Vangala
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Apple Inc
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Apple Inc
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Priority to US13/930,610 priority Critical patent/US9320050B2/en
Priority to DE112014003039.2T priority patent/DE112014003039B4/de
Priority to JP2016523754A priority patent/JP6257759B2/ja
Priority to CN201480036380.2A priority patent/CN105340347B/zh
Priority to PCT/US2014/040493 priority patent/WO2014209544A1/en
Priority to CN201811402114.3A priority patent/CN109168196B/zh
Priority to TW103121106A priority patent/TWI544770B/zh
Publication of US20150003336A1 publication Critical patent/US20150003336A1/en
Priority to US15/099,927 priority patent/US9578648B2/en
Publication of US9320050B2 publication Critical patent/US9320050B2/en
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    • H04W72/10—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/32—Hierarchical cell structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H04W72/1242—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H04W72/1231—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • LTE Long-term evolution
  • LTE-Advanced is a wireless communication standard used for high-speed data for mobile devices and data terminals.
  • LTE-Advanced is a major enhancement to the LTE standard.
  • carrier aggregation is used to increase the bandwidth, and thereby increase the bitrates.
  • Carrier aggregation has been introduced in the 3rd Generation Partnership Project (“3GPP”) Release 10 (LTE-Advanced standard) to provide wider than 20 MHz transmission bandwidth to a single device (e.g., user equipment or “UE”) while maintaining the backward compatibility with legacy UEs.
  • 3GPP 3rd Generation Partnership Project
  • FIG. 2 shows the protocols for the LTE standard along with the main changes due to carrier aggregation.
  • FIG. 3 shows a partial view of a network stack that may be implemented on a wireless device and an example of carrier aggregation being performed using the exemplary network stack.
  • FIG. 4 shows an exemplary method to enhance radio link performance in a multi-carrier environment.
  • FIGS. 5A-5D show an exemplary system to enhance radio link performance in a multi-carrier environment.
  • FIG. 6 shows an exemplary system for implementing enhanced eNodeB and UE.
  • a method may comprise sending, by an upper level layer of a device (e.g., a wireless device or user equipment (“UE”)), user data in a packet for transmission, wherein the packet includes an indication of a level of priority of the packet, such as a high priority or a low priority.
  • a high priority packet may be one of a retransmitted packet, a user data packet including an acknowledgment of packet receipt (e.g., TCP-ACK), a packet including robust header compression (“ROHC”) feedback, or a packet including real-time transport protocol (“RTP”) control protocol (“RTCP”) feedback.
  • TCP-ACK acknowledgment of packet receipt
  • ROHC robust header compression
  • RTP real-time transport protocol
  • RTCP real-time transport protocol
  • the method may also include receiving, by the media access control (“MAC”) layer of the device, the packet for transmission including the indication of the level of priority provided by the upper level layer, and identifying, by the MAC layer, a reliability of each of a plurality of component carriers.
  • the method may further include selecting, by the MAC layer, one of the component carriers on which to transmit the packet, wherein the selecting is based on the level of priority of the packet and the reliability of the one of the component carriers.
  • MAC media access control
  • a device comprising a non-transitory memory having a program stored thereon, and a processor executing the program, wherein the execution of the program causes the processor to perform operations comprising sending, by an upper level layer of the device, user data in a packet for transmission, wherein the packet includes an indication of a level of priority of the packet, receiving, by a MAC layer of the device, the packet for transmission including the indication of the level of priority provided by the upper level layer, identifying, by the MAC layer, a reliability of each of a plurality of component carriers, and selecting, by the MAC layer, one of the component carriers on which to transmit the packet, wherein the selecting is based on the level of priority of the packet and the reliability of the one of the component carriers.
  • Non-transitory computer readable storage medium with an executable program stored thereon, wherein the program instructs a processor to perform operations comprising sending, by an upper level layer of a wireless device, user data in a packet for transmission, wherein the packet includes an indication of a level of priority of the packet, receiving, by a media access control (“MAC”) layer of the wireless device, the packet for transmission including the indication of the level of priority provided by the upper level layer, identifying, by the MAC layer, a reliability of each of a plurality of component carriers, and selecting, by the MAC layer, one of the component carriers on which to transmit the packet, wherein the selecting is based on the level of priority of the packet and the reliability of the one of the component carriers.
  • MAC media access control
  • the exemplary embodiments are described with reference to the LTE-Advanced carrier aggregation scheme that has certain characteristics.
  • the characteristics include that the number of aggregated carriers may be different in DL and uplink (“UL”), typically, the number of UL component carriers is equal to or lower than the number of DL component carriers.
  • the individual component carriers may also be of different bandwidths.
  • TDD time division duplexing
  • the exemplary embodiments may be applied to any carrier aggregation scheme including those having different characteristics from the LTE-Advanced scheme.
  • a radio resource control (“RRC”) connection is handled by one cell, namely the primary serving cell (“PCell”), served by the primary component carrier (“PCC”) for uplink (“UL”) and downlink (“DL”). It is also on the DL PCC that the UE receives non-access stratum (“NAS”) information, such as security parameters. In idle mode, the UE listens to system information on the DL PCC.
  • the UL PCC is used to send the physical uplink control channel (“PUCCH”).
  • the other component carriers maybe referred to as secondary component carriers (“SCC”) for UL and DL, serving the secondary serving cells (“SCells”).
  • SCCs are added and removed as required, while the PCC is changed at handover.
  • PCell is the main cell that is used for all RRC signaling and control procedures.
  • carrier aggregation the SCell is considered an augmentation to the PCell, wherein SCell activation and deactivation is achieved quickly by MAC signaling.
  • the functionality of conventional carrier aggregation is implemented at the MAC layer and below in the user plane.
  • the packet data convergence protocol (“PDCP”) layer and the radio link control (“RLC”) layer do not have any influence on which carrier particular RLC and PDCP protocol data units (“PDUs”) should be sent. It is noted that the terms packet and PDU may be used interchangeably throughout the descriptions herein.
  • FIG. 2 shows the protocols for the LTE standard along with the main changes due to carrier aggregation.
  • carrier aggregation mainly influences the MAC and the physical layer protocol.
  • some new RRC messages are also introduced.
  • the PDCP and RLC may be treated as before carrier aggregation, information such as new RRC messages are now needed to handle the SCC, and the MAC layer must be able to handle scheduling on a number of component carriers.
  • Changes on the physical layer are, for example, that signaling information about scheduling on component carriers as well as a hybrid automatic repeat request (“HARQ”) ACK/NACK per component carrier must be carried.
  • HARQ hybrid automatic repeat request
  • FIG. 3 shows a partial view of a network stack 300 that may be implemented on a wireless device.
  • the exemplary layers that are illustrated include the physical layer PHY 310 , the MAC layer 320 , and the RLC layer 330 .
  • the network stack may include additional layers above the RLC layer 330 such as a PDCP layer, RRC layer, application layer, etc. All the layers above the MAC layer 320 may be singularly or collectively referred to as upper level layer(s).
  • Different wireless devices may implement different types of network stacks and different network stacks may have different combinations of the layers described herein or additional layers not mentioned here.
  • the network stack 300 may be implemented on the wireless device as a combination of hardware and software.
  • the wireless device may include hardware components such as processors, non-transitory storage mediums (e.g., RAM, flash drives, etc.), transceivers, antennas, etc.
  • the non-transitory storage medium may store multiple software components such as an operating system (“OS”), applications, etc., that are executed by the processor(s) to operate and control the wireless device.
  • OS operating system
  • One or more of the software components may be executed by the processor to implement the network stack 300 .
  • the wireless device may include any device that is configured to send and/or receive wireless signals, including, for example, those devices generally referred to as user equipment (“UE”) (e.g., mobile phones, smart phones, tablets, laptops, etc.) as well as network devices (e.g., base stations, eNodeB, etc.)
  • UE user equipment
  • network devices e.g., base stations, eNodeB, etc.
  • FIG. 3 further shows an example of carrier aggregation being performed using the exemplary network stack 300 .
  • the MAC layer 320 queries the RLC layer 330 to obtain RLC PDUs and formats MAC PDUs by adding an appropriate MAC header.
  • the MAC layer 320 then sends the user data to a lower layer for HARQ processing and to the PHY layer 310 for transmission. It may be noted that while the RLC layer 330 sends its PDUs to the MAC layer 320 upon receiving a request from the MAC layer 320 , the mapping of the RLC PDUs to its appropriate carrier is not influenced by the RLC/PDCP layers in conventional carrier aggregation.
  • a further downlink scheduler (“DL-SCH”) is simply added at the MAC layer 320 and the RRC is modified to support re-configuration of the SCC.
  • the MAC layer 320 e.g., multiplexing UE
  • the MAC layer 320 is responsible to decide on which carrier the user data (e.g., MAC PDU) should be sent over which carrier. Accordingly, in conventional carrier aggregation, it is possible that high priority RLC PDUs are sent over a carrier having poor radio link conditions.
  • the exemplary embodiments may allow for the RLC layer 330 , or any of the other upper level layers (e.g., the PDCP layer), to influence a MAC carrier selection algorithm to optimize end-to-end application performance.
  • the upper level layers may categorize data belonging to each logical channel based on an assigned priority level (e.g., a high priority, a low priority, etc.). For instance, the RLC/PDCP may categorize certain traffic as belonging to a given logical channel as high priority.
  • This traffic may include, but is not limited to, retransmitted RLC PDUs, user data containing TCP-ACK, PDUs containing ROHC feedback, PDUs containing RTCP feedback, any other urgent application layer signaling (e.g., video i-frames, etc.), etc.
  • traffic may be categorized as high priority, low priority, or any intermediate level(s) of priority based on any factors decided by the system designers.
  • the MAC layer 320 may maintain a quality level of each individual carrier to categorize the carrier as high priority or low priority.
  • metrics that may be employed by the MAC layer 320 may include, but are not limited to, channel quality metrics from UL signals as sounding reference signals (“SRSs”), UE feedback as channel state information (“CSI”) and reference signal received power/reference signal received quality (“RSRP/RSRQ”). Additional metric examples include block error ratio (“BLER”) estimation from acknowledgement (“ACK”) and non-acknowledgement (“NACK”) transmissions in UL, MAC/RLC layer retransmission and segmentation patterns of each individual carrier, etc.
  • SRSs sounding reference signals
  • CSI channel state information
  • RSRP/RSRQ reference signal received power/reference signal received quality
  • Additional metric examples include block error ratio (“BLER”) estimation from acknowledgement (“ACK”) and non-acknowledgement (“NACK”) transmissions in UL, MAC/RLC layer retransmission and segmentation patterns of each individual carrier, etc.
  • any reliability metric may be selected to monitor carrier reliability. It is noted that the UE may also evaluate the quality of an uplink carrier by measuring DL metrics. Accordingly, the UE may utilize this information to prioritize uplink transmissions over different carriers.
  • retransmitted PDUs may be assigned the highest level of priority by the RLC/PDCP layer such that retransmitted PDUs are transmitted over the most reliable carrier.
  • application layer signaling may be assigned the next highest level of priority such that this data may be transmitted over the most reliable carrier or a carrier that is a level below the most reliable.
  • the MAC layer 320 may maintain an ongoing measure of the reliability of each carrier.
  • the RLC/PDCP layer, or any other upper level layer may assign a priority level to each PDU.
  • the MAC layer 320 may query the RLC layer 330 to request the RLC PDUs.
  • the RLC layer 330 may send the PDUs to the MAC layer 320 for transmission, or more properly, to be further prepared by the MAC layer 320 for transmission.
  • each RLC PDU may include the priority level assigned by one of the upper level layers.
  • the MAC layer 320 may use the assigned priority level to select the appropriate carrier for the PDU.
  • This selection may be based on the assigned priority level and the reliability measure of each carrier that is maintained by the MAC layer 320 .
  • the upper level layers e.g., RLC/PDCP layers
  • the carrier that is selected for individual PDUs may be selected for individual PDUs.
  • FIG. 4 shows an exemplary method 400 to enhance radio link performance in a multi-carrier environment. The operations performed by the method 400 will be described in reference to the exemplary network stack 300 implemented by a wireless device and its components described above with reference to FIG. 3 .
  • an upper level layer of a wireless device may format a packet for transmission.
  • the upper level layer may be the RLC layer 330 or the PDCP layer.
  • the upper level layer may include an indication of a level of priority of the packet, such as high priority or low priority. For example, packets that are retransmitted packets, user data packets including a TCP-ACK, packets including ROHC feedback, or packets including RTCP feedback may be identified as high priority packets.
  • a user may maintain implementation specific metadata associated with each packet. This metadata may contain information about each packet's priority, etc.
  • the priority information may not be transmitted over the air, hence it is not necessary to modify the headers of any PDCP/RLC/MAC layers PDU in order to classify the packet(s) as high priority or low priority. In addition, it is also possible to maintain separate queues for high or low priority PDUs.
  • the MAC layer 320 may request a packet from the RLC layer 330 for transmission.
  • the MAC layer 320 may receive the packet including the indication of the level of priority provided by the upper level layer.
  • the MAC layer 320 may also indicate to the RLC layer 330 that the MAC layer 320 is looking for higher priority PDUs from the RLC layer 330 . Accordingly, the RLC layer 330 may first send all high priority PDUs to the MAC layer 320 prior to sending any lower priority PDUs.
  • the MAC layer 320 may format the packet for transmission by adding the MAC layer header and passing the packet to the PHY layer 310 , which will transmit the packet over the selected component carrier, as shown by the example component carrier in FIG. 3 . Accordingly, the transmission of the packet over the component carrier selected in step 440 ensures that each of the retransmitted packets, such as high priority RLC PDUs, are transmitted over the most reliable carrier and the method 400 provides the upper level layers with a say over which carriers are used for a particular packet or groups of packets.
  • the combination of carrier aggregation and upper level layer influence on carrier selection may include other forms of improved packet transmission.
  • the MAC layer 320 may decide to send the same user data simultaneously over the multiple carriers.
  • the receiver HARQ entity may then combine multiple HARQ PDUs containing redundant information to decode the original transmitted data.
  • the same HARQ PDU may be sent on both carriers.
  • the transmitting UE may benefit from the repetition of the packet.
  • This embodiment may create the same gain as HARQ chase combining.
  • the two packets (e.g., HARQ PDUs) may then be encoded in the same manner at the physical layer. Thus, not only may the packets contain the same bit information, the transmission packets may also be similar.
  • a typical HARQ is designed such that the number of retransmissions needed for successful decoding is around 1.1, assuming a target BLER of 10%.
  • the multiple HARQ PDUs allow the UE to successfully decode the packet in 1 subframe (1 ms).
  • the eNB may inform the receiving UE that the UE may combine both HARQ PDUs.
  • the eNB may provide this information via the PDCCH by including a bit of information or a flag to indicate to the UE that the UE is to combine the HARQ PDUs across the two carriers.
  • the UE may then understand that the same HARQ process is used across the two carriers.
  • the redundancy version in PDCCH of each carrier may be used by the UE to optimally combine the two physical layer blocks, such as, for instance, in an incremental redundancy manner, in a chase combining manner, etc.
  • an exemplary wireless device for sending user data in a packet for transmission may be, for instance, the UE uplinking the user data to a wireless network or a base station (e.g., eNB) downlinking the user data to the UE.
  • a base station e.g., eNB
  • the carrier aggregation scheme described herein may be implemented in the context of a small cell where the small cell implements one carrier and the macro cell implements another carrier.
  • FIGS. 5A-5D show four different possible small cell configurations 501 - 504 .
  • Each of the small cell configurations 501 - 504 include a serving gateway (S-GW) 540 , a macro evolved Node B (“MeNB”) 520 , and a source evolved Node B (“SeNB”) 530 .
  • S-GW serving gateway
  • MeNB macro evolved Node B
  • SeNB source evolved Node B
  • the macro and small cells are transmitting PDUs to a UE 510 .
  • Each of the nodes, MeNB 520 and the SeNB 530 may include a plurality of layers, such as a physical layer (PHY 521 / 531 ), a media access control layer (MAC 522 / 532 ), a radio link control layer (RLC 523 / 533 ), and a packet data convergence protocol layer (PDCP 524 / 534 ).
  • a physical layer PHY 521 / 531
  • MAC 522 / 532 media access control layer
  • RLC 523 / 533 radio link control layer
  • PDCP 524 / 534 packet data convergence protocol layer
  • each of the eNBs may use X2 links for coordination if MAC/RLC entities are not implemented on the same cell.
  • FIG. 5A shows a configuration 501 where the SeNB 530 only includes the physical layer 531 .
  • the MAC layer 522 of the MeNB 520 will control the flow of packets to and from the physical layers 521 and 531 of the MeNB 520 and the SeNB 530 , respectively. That is, the MAC layer 522 of the MeNB 520 will receive packets from the upper level layers (e.g., RLC layer 523 and PDCP 524 ) of the MeNB 520 and select the carrier that is either corresponding to the physical layer 521 of the MeNB 520 or the physical layer 531 of the SeNB 530 and forward the PDU to the appropriate physical layer 521 / 531 .
  • the selection of the carrier is done in the same manner as was generally described above with reference to FIG. 3 .
  • FIG. 5C shows a configuration 503 where the SeNB 530 includes the physical layer 531 , the MAC layer 532 and an RLC layer 533 .
  • either of the RLC layers 523 / 533 may receive PDUs from the PDCP layer 524 of the MeNB 520 .
  • the X2 interface links need to be used to coordinate how the PDCP layer 524 PDUs are sent to the different RLC layers 523 / 533 .
  • FIG. 5D shows a configuration 504 where the SeNB 530 includes the physical layer 531 , the MAC layer 532 , the RLC layer 533 and a PDCP layer 534 .
  • the PDCP layers 524 / 534 may receive PDUs from upper level layers for transmission.
  • the X2 interface links need to be used to coordinate how the upper level layer PDUs are sent to the different PDCP layers 524 / 534 .
  • FIG. 6 shows an exemplary system 600 for providing creating several subflows within a flow a data for an enhanced base station (e.g., eNodeB) and a device (e.g., UE). It may be noted that exemplary system 600 may be implemented within both the UE and the eNodeB.
  • the plurality of subflows may include information such as a priority setting (e.g., high, medium, low), a delay budget (e.g., derived from a QoS class identifier (“QCI”) table), and holding time, wherein an initial holding time may be set to equal the delay budget associated with the flow. Accordingly, the holding time may be decremented depending upon how long a packet is stored in a buffer.
  • a priority setting e.g., high, medium, low
  • a delay budget e.g., derived from a QoS class identifier (“QCI”) table
  • QCI QoS class identifier
  • the exemplary system 600 may include a flow classifier 610 , a tagger/subflow classifier 620 , a modified MAC layer 630 and a physical layer 640 .
  • IP packets may be received at the flow classifier 610 and traverse 3GPP logical channels to the tagger/subflow classifier 620 .
  • the eNodeB may tag DL packets and the UE may tag UL packets.
  • the tagging may be based on a categorized priority level designated for each packet. For instance, the UE and eNodeB may utilize a set of rules for categorizing DL/UL packets into various priority groups.
  • High priority classification may include packets such as retransmitted RLC PDUs, RLC status update, ROHC feedback, etc.
  • Medium priority classification may include packets such as user data containing TCP-ACK, RTCP feedback, video I-frame, etc.
  • Low priority classification may include packets such as user data containing new data.
  • the IP packets may traverse tagged logical channels to the modified MAC layer 630 for mapping MAC PDUs to individual carriers at the physical layer 640 .
  • the MAC layer 630 may utilize per-flow delay budget to aggregate multiple packets into one MAC PDU.
  • the urgency for sending packet may increase.

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US13/930,610 US9320050B2 (en) 2013-06-28 2013-06-28 Systems and methods to enhance radio link performance in a multi-carrier environment
DE112014003039.2T DE112014003039B4 (de) 2013-06-28 2014-06-02 Systeme und Verfahren zum Verbessern der Funkverbindungsleistungen in einer Mehrfach-Träger-Umgebung
JP2016523754A JP6257759B2 (ja) 2013-06-28 2014-06-02 マルチキャリア環境内における無線リンク性能を向上させるためのシステム及び方法
CN201480036380.2A CN105340347B (zh) 2013-06-28 2014-06-02 用于提高多载波环境中的无线电链路性能的系统和方法
PCT/US2014/040493 WO2014209544A1 (en) 2013-06-28 2014-06-02 Systems and methods to enhance radio link performance in a multi-carrier environment
CN201811402114.3A CN109168196B (zh) 2013-06-28 2014-06-02 用于提高多载波环境中的无线电链路性能的系统和方法
TW103121106A TWI544770B (zh) 2013-06-28 2014-06-18 增加多載波環境中無線電鏈路效能之系統及方法
US15/099,927 US9578648B2 (en) 2013-06-28 2016-04-15 Systems and methods to enhance radio link performance in a multi-carrier environment
US15/435,643 US9848435B2 (en) 2013-06-28 2017-02-17 Systems and methods to enhance radio link performance in a multi-carrier environment

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10334467B2 (en) * 2014-12-08 2019-06-25 Telefonaktiebolaget L M Ericsson (Publ) Method and radio network node for estimating channel quality
US10419332B2 (en) * 2014-11-07 2019-09-17 Canon Kabushiki Kaisha Feedback management in a multipath communication network

Families Citing this family (16)

* Cited by examiner, † Cited by third party
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US10180115B2 (en) 2010-04-27 2019-01-15 Achates Power, Inc. Piston crown bowls defining combustion chamber constructions in opposed-piston engines
US20150036600A1 (en) * 2013-08-02 2015-02-05 Electronics And Telecommunications Research Institute Apparatus and method for retransmitting hybrid automatic repeat request (harq)
US10660072B2 (en) * 2015-03-18 2020-05-19 Apple Inc. Terminal device and mobile radio communication by terminal device
CN109565792B (zh) * 2016-08-10 2024-03-08 株式会社Ntt都科摩 终端、基站、系统及通信方法
US10432761B2 (en) * 2017-01-18 2019-10-01 Qualcomm Incorporated Techniques for handling internet protocol flows in a layer 2 architecture of a wireless device
US10367712B2 (en) * 2017-03-20 2019-07-30 Citrix Systems, Inc. Auto tuning of hybrid wan links by adaptive duplication of packets on alternate links
CN110326354B (zh) * 2017-04-26 2023-11-24 Oppo广东移动通信有限公司 资源调度的方法和设备
CA3066008C (en) * 2017-07-27 2023-02-14 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Wireless communication method, terminal device and network device
CN109413619B (zh) * 2017-08-14 2022-01-28 中兴通讯股份有限公司 信息发送、操作执行方法及装置、会话管理功能实体
EP3692738B1 (de) * 2017-10-07 2023-11-29 LG Electronics Inc. Verfahren und vorrichtung zur steuerung von paketduplizierung
CN110300337A (zh) * 2018-03-21 2019-10-01 华为技术有限公司 无线保真链路重传报文的方法和装置
US11563531B2 (en) * 2019-05-03 2023-01-24 Qualcomm Incorporated Communication configuration for multiple component carriers
EP4032208A4 (de) 2019-09-20 2023-05-31 Qualcomm Incorporated Kommunikation mit niedriger latenzzeit mit trägeraggregationsbasierten fontänencodes
CN117177371A (zh) * 2019-11-04 2023-12-05 苹果公司 辅小区的故障处理
WO2021087926A1 (zh) * 2019-11-07 2021-05-14 富士通株式会社 上行信号的发送和接收方法以及装置
CN113438519B (zh) * 2021-06-23 2023-02-03 杭州海康威视数字技术股份有限公司 一种视频传输方法、装置、电子设备及存储介质

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020141403A1 (en) * 2001-03-30 2002-10-03 Shinichi Akahane Router
US7054270B2 (en) 2000-10-07 2006-05-30 Lg Electronics Inc. Method for transmitting data from RLC layer in radio communication system
US7230937B2 (en) 2001-12-05 2007-06-12 Huawei Technologies Co., Ltd. Method for supporting traffics with different quality of service by high speed down link packet access system
US20070291687A1 (en) * 2006-06-19 2007-12-20 Innovative Sonic Limited Method of constructing packets for MAC layer in wireless communications system and related apparatus
US7450555B2 (en) 2002-07-08 2008-11-11 Samsung Electronics Co., Ltd Method of setting initial transport format combination in broadband code division multiple access system
US20090215456A1 (en) 2008-02-01 2009-08-27 Lg Electronics Inc. Method for sending rlc pdu and allocating radio resource in mobile communications system and rlc entity of mobile communications
US20090323671A1 (en) 2008-06-30 2009-12-31 Chih-Hsiang Wu Method for determining rlc data pdu size in wireless communications system according to control data
US20100254329A1 (en) * 2009-03-13 2010-10-07 Interdigital Patent Holdings, Inc. Uplink grant, downlink assignment and search space method and apparatus in carrier aggregation
US20100281486A1 (en) * 2009-05-04 2010-11-04 HT mMobile Inc. Enhanced scheduling, priority handling and multiplexing method and system
US20110228863A1 (en) 2010-03-22 2011-09-22 Samsung Electronics Co., Ltd. Multiplexing control and data information from a user equipment in a physical data channel
US20110249563A1 (en) 2010-04-09 2011-10-13 Simone Provvedi Dynamic Adaptation of Downlink RLC PDU Size
US20110255432A1 (en) * 2010-04-15 2011-10-20 Sharad Deepak Sambhwani Load Control in Uplink Interference Cancellation Systems With Soft Decision
US8050292B2 (en) 2008-06-30 2011-11-01 Htc Corporation Method of performing transmission and prioritization for radio link control packets for a medium access control layer of a wireless communications system
US8068497B2 (en) 2002-05-10 2011-11-29 Interdigital Technology Corporation System and method for prioritization of retransmission of protocol data units to assist radio-link-control retransmission
US8254410B2 (en) 2009-04-30 2012-08-28 Telefonaktiebolaget L M Ericsson (Publ) Systems and methods for transmitting radio link control (RLC) data blocks
US20120230217A1 (en) 2009-11-18 2012-09-13 Sony Corporation User equipment, base station, communication control method, and radio communication system
US8279822B2 (en) 2009-12-30 2012-10-02 Motorola Mobility Llc Method and apparatus for scheduling an acknowledgement in a wireless communication system
US20130083783A1 (en) 2011-10-03 2013-04-04 Vivek Gupta Multi-RAT Carrier Aggregation for Integrated WWAN-WLAN Operation

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0302685D0 (sv) * 2003-10-07 2003-10-07 Ericsson Telefon Ab L M Method and arrangement in a telecommunication system
CN101313501B (zh) * 2005-12-09 2013-03-20 桥扬科技有限公司 多载波通信系统中的频率校正方法、移动设备和基站
US8315243B2 (en) * 2007-08-14 2012-11-20 Qualcomm Incorporated Transport of PDCP control PDUs within MAC frames
WO2010002609A1 (en) * 2008-07-02 2010-01-07 Marvell World Trade Ltd. Dynamic symbol to antenna and subcarrier mapping for chase-combining harq
US8867431B2 (en) * 2009-03-19 2014-10-21 Lg Electronics Inc. Method and apparatus for multicell cooperative communication
KR101669966B1 (ko) * 2009-05-11 2016-10-27 엘지전자 주식회사 다중 반송파를 지원하는 무선 통신 시스템에서 중복 데이터를 송신 및 수신하는 방법 및 장치
CN101902817B (zh) * 2009-05-26 2015-07-22 中兴通讯股份有限公司 无线通信系统中上行无线资源调度方法与装置
US8767638B2 (en) * 2009-08-06 2014-07-01 Htc Corporation Method of handling resource assignment and related communication device
KR101335869B1 (ko) * 2009-08-12 2013-12-02 엘지전자 주식회사 무선 통신 시스템에서 논리채널에 대한 자원 할당 방법 및 장치
US8638815B2 (en) 2010-01-08 2014-01-28 Blackberry Limited Method and apparatus for logical channel prioritization for uplink carrier aggregation
CN102333374B (zh) * 2010-07-13 2015-07-08 大唐移动通信设备有限公司 一种增强cell_fach态的数据下发方法、系统
US8717920B2 (en) * 2010-10-08 2014-05-06 Telefonaktiebolaget L M Ericsson (Publ) Signalling mechanism for multi-tiered intra-band carrier aggregation
JP2012205039A (ja) * 2011-03-25 2012-10-22 Hitachi Kokusai Electric Inc 移動局装置
CN102958102B (zh) * 2011-08-22 2017-09-29 中兴通讯股份有限公司 一种rlc分流传输方法及系统
JP2013128236A (ja) * 2011-12-19 2013-06-27 Mitsubishi Electric Corp データ送信装置、データ受信装置、データ送受信装置、及びデータ送受信システム
EP2815603B1 (de) * 2012-02-17 2019-09-25 Interdigital Patent Holdings, Inc. Hierarchische verkehrsdifferenzierung zur verwaltung von überlastungen und/oder der erfahrensqualität von benutzern
US9578671B2 (en) * 2013-03-15 2017-02-21 Blackberry Limited Establishing multiple connections between a user equipment and wireless access network nodes

Patent Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110199998A1 (en) 2000-10-07 2011-08-18 Seung June Yi Method For Transmitting Data From RLC Layer in Radio Communication System
US8004986B2 (en) 2000-10-07 2011-08-23 Lg Electronics Inc. Method for transmitting data from RLC layer in radio communication system
US7054270B2 (en) 2000-10-07 2006-05-30 Lg Electronics Inc. Method for transmitting data from RLC layer in radio communication system
US7539137B2 (en) 2000-10-07 2009-05-26 Lg Electronics Inc. Method for transmitting data from RLC layer in radio communication system
US20020141403A1 (en) * 2001-03-30 2002-10-03 Shinichi Akahane Router
US7230937B2 (en) 2001-12-05 2007-06-12 Huawei Technologies Co., Ltd. Method for supporting traffics with different quality of service by high speed down link packet access system
US8068497B2 (en) 2002-05-10 2011-11-29 Interdigital Technology Corporation System and method for prioritization of retransmission of protocol data units to assist radio-link-control retransmission
US7450555B2 (en) 2002-07-08 2008-11-11 Samsung Electronics Co., Ltd Method of setting initial transport format combination in broadband code division multiple access system
US20070291687A1 (en) * 2006-06-19 2007-12-20 Innovative Sonic Limited Method of constructing packets for MAC layer in wireless communications system and related apparatus
US20090215456A1 (en) 2008-02-01 2009-08-27 Lg Electronics Inc. Method for sending rlc pdu and allocating radio resource in mobile communications system and rlc entity of mobile communications
US20090323671A1 (en) 2008-06-30 2009-12-31 Chih-Hsiang Wu Method for determining rlc data pdu size in wireless communications system according to control data
US8050292B2 (en) 2008-06-30 2011-11-01 Htc Corporation Method of performing transmission and prioritization for radio link control packets for a medium access control layer of a wireless communications system
US20100254329A1 (en) * 2009-03-13 2010-10-07 Interdigital Patent Holdings, Inc. Uplink grant, downlink assignment and search space method and apparatus in carrier aggregation
US20120281666A1 (en) 2009-04-30 2012-11-08 John Diachina Systems and methods for transmitting radio link control (rlc) data blocks
US8254410B2 (en) 2009-04-30 2012-08-28 Telefonaktiebolaget L M Ericsson (Publ) Systems and methods for transmitting radio link control (RLC) data blocks
US20100281486A1 (en) * 2009-05-04 2010-11-04 HT mMobile Inc. Enhanced scheduling, priority handling and multiplexing method and system
US20120230217A1 (en) 2009-11-18 2012-09-13 Sony Corporation User equipment, base station, communication control method, and radio communication system
US8279822B2 (en) 2009-12-30 2012-10-02 Motorola Mobility Llc Method and apparatus for scheduling an acknowledgement in a wireless communication system
US20110228863A1 (en) 2010-03-22 2011-09-22 Samsung Electronics Co., Ltd. Multiplexing control and data information from a user equipment in a physical data channel
US20110249563A1 (en) 2010-04-09 2011-10-13 Simone Provvedi Dynamic Adaptation of Downlink RLC PDU Size
US20110255432A1 (en) * 2010-04-15 2011-10-20 Sharad Deepak Sambhwani Load Control in Uplink Interference Cancellation Systems With Soft Decision
US20130083783A1 (en) 2011-10-03 2013-04-04 Vivek Gupta Multi-RAT Carrier Aggregation for Integrated WWAN-WLAN Operation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10419332B2 (en) * 2014-11-07 2019-09-17 Canon Kabushiki Kaisha Feedback management in a multipath communication network
US10334467B2 (en) * 2014-12-08 2019-06-25 Telefonaktiebolaget L M Ericsson (Publ) Method and radio network node for estimating channel quality

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US20170164380A1 (en) 2017-06-08
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US20150003336A1 (en) 2015-01-01
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JP6257759B2 (ja) 2018-01-10
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